What's your max MPG?

[WolfeMacleod]

Was reading the recent issue of GT Purely Porsche...article abou the 3.2 mentions that it was capable of getting an amazing 41.6 mpg at a constant 55mph. And 31.4mpg at 75mph.

This makes me pretty curious, as I once managed to squeeze out 500 miles from 17 gallons for a whopping 29mpg on a long fast trip.

What's the max fuel mileage some of you have managed to eek out of your P-cars cars? What year car?

Anyone up for a nice game of Hypermiling?

Here's a page from the article.

[Jims5543]

If I can behave, which is nearly impossible, I have seen 32.2 MPG in my 80 911SC w/ 3.6 swap. I have to stay in the 70 MPH range to do this.

When I drive like I do, I get 24-26 MPG on road trips. Daily driving I see 20-23.

[Aerkuld]

Looking at that page and the spelling of the word "...favourably..." I would say it is a UK based magazine. Don't forget that the UK gallon is 20% larger than a US gallon (UK gallon = 4.546 liters, US gallon = 3.785 liters) which will increase the fuel economy accordingly. Therefore the article would read "34.6 mpg at a constant 55mph. And 26.1 mpg at 75mph." when converted to US numbers.

[Rot 911]

My Carrera gets between 28-30 on the highway depending on how fast I am going. Usually between 75-80mph.

[Aerkuld]

I usually reckon on 400 to 440 miles before I stop to fill the tank in the '87 which is somewhere in the 23-27 mpg range depending on how empty the tank is when I stop, but usually about 16 gallons give or take. None of that is really long highway cruises or around town traffic, just country road driving.
In the 996 I did have the on board computer showing something in excess of 32 mpg on a run between Charlotte and Augusta one weekend at a average speed of about 70mph (nearly all freeway). High 20's or low 30's are pretty typical on long runs. Daily commute is normally about 21-23 mpg though.
The 944 always seems to do about 24-25 mpg no matter where it goes.

[Mo_Gearhead]

Miles per gallon.

Been lucky I guess. Never had a long commute for work or a job that caused me to drive a lot. I assume many people do ...and thus, this becomes important to them. Though I can't imagine WHY it would matter in a Porsche or any performance car??? (Unless the above conditions apply and it's your daily ride.)

I can't recall the last time I checked the MPG on ANY vehicle I have owned. Had to be 25 years ago and only then on a long vacation trip (out of curiosity).

I buy all my vehicles because ...I LIKE THEM. The way they look, handle, perform, their configuration, comfort and that fill a function/purpose I desire. I certainly hope I am never in the position where I have to purchase a car because it gets five more MPG than another.

[Aerkuld]

Originally Posted by Mo_Gearhead

Miles per gallon.

Been lucky I guess. Never had a long commute for work or a job that caused me to drive a lot. I assume many people do ...and thus, this becomes important to them. Though I can't imagine WHY it would matter in a Porsche or any performance car??? (Unless the above conditions apply and it's your daily ride.)

I can't recall the last time I checked the MPG on ANY vehicle I have owned. Had to be 25 years ago and only then on a long vacation trip (out of curiosity).

I buy all my vehicles because ...I LIKE THEM. The way they look, handle, perform, their configuration, comfort and that fill a function/purpose I desire. I certainly hope I am never in the position where I have to purchase a car because it gets five more MPG than another.

I see your point.
To be honest I have never actually calculated the mpg for the '87 but I do keep an eye on when to fill up, so I know how far it will go and I have a reasonably good idea of how much fuel goes in.
The 996 I have a readout on the dash that I can look at, and do to see how lead-footed I am being.
The 944 on the otherhand I would record the mileage and keep track of mpg to make sure everything was working as it should and that there were no major issues.

[Jims5543]

I check my MPG all the time on all my vehicles, Its more about spotting a problem for me, if it drops off all of the sudden I consider 2 things, was it my driving style or is there something wrong with the car.

[masraum]

On my '88 I used to get 21-23mpg on the highway (cruisin at 80-90 with plenty of downshifts for passing and fun. Around town, I used to get 15-17mpg during the winter and 17-19 during the summer. I couldn't ever drive nice enough to get stellar mileage, but I feel like the car would have.

Hell, I still only get about 21mpg in my miata around town but I have gotten as high as 25 once doing my version of not-quite-so-hyper-miling

[legion]

I'm lucky to break into the 20's with the 951. It is mostly driving-style related.

But cruising on the highway, I seem to be able to go 150-200 miles before I'm at half tank. As I have never had much confidence in the gauge, that is when I fill up.

[rammstein]

Chris-

On one trip, I filled up your 951. Drove at very sedate speeds, constant RPMS, and I got just shy of 30. This was based on # miles driven / gallons until automatic shutoff at the pump (which is where I filled to both times). Not perfectly scientific, but the car IS capable of darn good mileage. Just requires a complete removal of testosterone to do it (I had a bad day or something).

[kach22i]

Originally Posted by masraum

On my '88 I used to get 21-23mpg on the highway (cruisin at 80-90 with plenty of downshifts for passing and fun. Around town, I used to get 15-17mpg during the winter and 17-19 during the summer. I couldn't ever drive nice enough to get stellar mileage, but I feel like the car would have.

Similar on my 2.7L, it used to be half that before I started doing the work myself.

Stupid shops (I have one in mind) rob you blind and don't know what they are doing.

[Dantilla]

My 3.2 has a 7:31 ring & pinion behind it. Even though the car is down to 2200 pounds, I don't get very good mileage. Probably has something to do with my difficulty in behaving myself.

[livi]

Every tank exactly the same - 1 liter/ 10 km. I think that equals about 23.5 mpg.

[gprsh924]

I drive the 924 almost exclusively in town or on very short (10 miles or less) highway jaunts. It is hard to tell exactly because the odometer has been broken since I started driving the car, but my guess is that I get between 22-27 mpg.

[jluetjen]

I consistantly get about 21 MPG out of my 2.0E with S pistons and the original MFI.

[bigchillcar]

seems like 22 mpg on highway driving around 70-80. more like 19 in town. cyntex-chipped 1990 964 with secondary cat bypass..

[alf]

That could be accomplished if, as pointed out about, you drive sanely. Shifting when the shift light comes on helps immensely, but I could not do that for long

[Tim Walsh]

Originally Posted by masraum

On my '88 I used to get 21-23mpg on the highway (cruisin at 80-90 with plenty of downshifts for passing and fun. Around town, I used to get 15-17mpg during the winter and 17-19 during the summer. I couldn't ever drive nice enough to get stellar mileage, but I feel like the car would have.

Hell, I still only get about 21mpg in my miata around town but I have gotten as high as 25 once doing my version of not-quite-so-hyper-miling

Wow in my 94 miata, I almost always see 25+, usually about 28mpg, and it never goes a full tank without an autocross on it. And each autocross involves 3 drivers in the car.

[WolfeMacleod]

Originally Posted by Tim Walsh

Wow in my 94 miata, I almost always see 25+, usually about 28mpg, and it never goes a full tank without an autocross on it. And each autocross involves 3 drivers in the car.

Yep, I Autocross kills my mileage for sure. I rarely go a full tank without an autocross happening.

Interesting to see the mileage reports. I really begin to wonder just what kind of mileage I can eek out of my car with good behavior. Maybe I'll take a night-time drive when there's no traffic to cause slowdown/accelerate issues.
Meh...probably won't happen.